特殊土边坡的植被防护工程及景观研究

Vegetation Protection and Landscape Engineering Based on Special Soil Slope

为便于植被防护技术在特殊土边坡中的设计和应用,首先介绍了黄土边坡和膨胀土边坡在工程中的问题及形成问题的本质原因;然后,分别从植被根系的浅层防护、深层防护机理及植被防护的水文效应3个方面,详细阐述了植被对特殊土边坡防护的适用性;进而,针对黄土的湿陷性及膨胀土的非饱和性,分别探讨了植被防护的内在机理;此外,针对两类边坡的特点分别给出了植被防护种类的选取及建议;最后,分析了植被护坡生态景观效应,以期为特殊土边坡植被防护应用提供相应的参考。

In order to facilitate the design and application of vegetation protection technology in special soil slopes,this article first introduces the problems of the loess slopes and expansive soil slopes in the engineering and the essential reasons for the formation of the problems;Then,the applicability of vegetation to special soil slope protection is elaborated from three aspects:shallow protection mechanism,deep protection mechanism and hydrological effect of vegetation protection.Furthermore,in view of the collapsibility of loess and the unsaturated property of expansive soil,the intrinsic mechanism of vegetation protection were discussed;Finally,according to the characteristics of the two types of slopes,the selection and recommendations of the types of vegetation protection are given,and the ecological landscape effect of vegetation slope protection is analyzed.